Mage · Arcane · tier 3 · from level 20

Arcane Impact

+30.1 Arcane Missiles

3/3 · level 60 · per cast · and 2 more

Arcane Impact 123

Rank 3/3

Increases the critical strike chance of your Arcane spells by 6%.

Arcane Missiles +3.0% +30.1 Arcane Blast +3.0% +11.3 Arcane Explosion +3.0% +7.2

Averages, counting crits and misses, for a level 60 Mage with a typical weapon and no other gear or buffs, against a target your level. Worked out from the game's own data, the same way as the Foresight addon.